﻿<common:LayoutAwarePage
    x:Name="pageRoot"
    x:Class="FeedReaderApp.ItemDetailPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:FeedReaderApp"
    xmlns:common="using:FeedReaderApp.Common"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:Callisto="using:Callisto"
    mc:Ignorable="d">

    <Page.Resources>
        <CollectionViewSource x:Name="itemsViewSource" Source="{Binding Items}" />
    </Page.Resources>

    <!--
        This grid acts as a root panel for the page that defines two rows:
        * Row 0 contains the back button and page title
        * Row 1 contains the rest of the page layout
    -->

    <Grid Background="#ffffff"
        Style="{StaticResource LayoutRootStyle}">
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="100"/>
            <ColumnDefinition Width="*"/>
            <ColumnDefinition Width="100"/>
        </Grid.ColumnDefinitions>
        <Grid.RowDefinitions>
            <RowDefinition Height="140"/>
            <RowDefinition Height="*"/>
            <RowDefinition Height="70"/>
        </Grid.RowDefinitions>

        <!--
            The remainder of the page is one large FlipView that displays details for
            one item at a time, allowing the user to flip through all items in the chosen
            group
        -->
        <Button x:Name="ButtonLeft" Grid.Column="0" Grid.Row="1" HorizontalAlignment="Center" Click="ButtonClickLeft">
            <Image Source="Assets/ArrowHead-Left.png"></Image>
        </Button>
        <Button x:Name="ButtonRight" Grid.Column="2" Grid.Row="1" HorizontalAlignment="Center" Click="ButtonClickRight">
            <Image Source="Assets/ArrowHead-Right.png"></Image>
        </Button>
        
        <Grid x:Name="itemGridView" Grid.Row="1" Grid.Column="1" Grid.RowSpan="2">
            <WebView x:Name="webView" 
                     Callisto:WebViewExtension.HtmlSource="{Binding SelectedItem.ContentReWrapped}" 
                     HorizontalAlignment="Stretch" 
                     VerticalAlignment="Stretch" />
        </Grid>


        <!-- Back button and page title -->
        <Grid Grid.ColumnSpan="3"  Background="#464646">
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="Auto"/>
                <ColumnDefinition Width="*"/>
            </Grid.ColumnDefinitions>
            
            <Button x:Name="backButton" Click="GoBack" IsEnabled="{Binding Frame.CanGoBack, ElementName=pageRoot}" Style="{StaticResource BackButtonStyle}"/>
            <TextBlock x:Name="pageTitle" Text="{Binding SelectedItem.Title}" Style="{StaticResource PageHeaderTextStyle}" Grid.Column="1" IsHitTestVisible="false"/>
        </Grid>

        <VisualStateManager.VisualStateGroups>

            <!-- Visual states reflect the application's view state -->
            <VisualStateGroup x:Name="ApplicationViewStates">
                <VisualState x:Name="FullScreenLandscape"/>
                <VisualState x:Name="Filled"/>

                <!-- The back button respects the narrower 100-pixel margin convention for portrait -->
                <VisualState x:Name="FullScreenPortrait">
                    <Storyboard>
                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="backButton" Storyboard.TargetProperty="Style">
                            <DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource PortraitBackButtonStyle}"/>
                        </ObjectAnimationUsingKeyFrames>
                    </Storyboard>
                </VisualState>

                <!-- The back button and title have different styles when snapped -->
                <VisualState x:Name="Snapped">
                    <Storyboard>
                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="backButton" Storyboard.TargetProperty="Style">
                            <DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource SnappedBackButtonStyle}"/>
                        </ObjectAnimationUsingKeyFrames>
                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="pageTitle" Storyboard.TargetProperty="Style">
                            <DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource SnappedPageHeaderTextStyle}"/>
                        </ObjectAnimationUsingKeyFrames>
                        <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(Grid.Column)" Storyboard.TargetName="itemGridView">
                            <DiscreteObjectKeyFrame KeyTime="0">
                                <DiscreteObjectKeyFrame.Value>
                                    <x:Int32>0</x:Int32>
                                </DiscreteObjectKeyFrame.Value>
                            </DiscreteObjectKeyFrame>
                        </ObjectAnimationUsingKeyFrames>
                        <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(Grid.ColumnSpan)" Storyboard.TargetName="itemGridView">
                            <DiscreteObjectKeyFrame KeyTime="0">
                                <DiscreteObjectKeyFrame.Value>
                                    <x:Int32>3</x:Int32>
                                </DiscreteObjectKeyFrame.Value>
                            </DiscreteObjectKeyFrame>
                        </ObjectAnimationUsingKeyFrames>
                    </Storyboard>
                </VisualState>
            </VisualStateGroup>
        </VisualStateManager.VisualStateGroups>
    </Grid>
    
</common:LayoutAwarePage>

